pre-upload: show ebuilds failing keywords check

If uploading multiple files, it might not be obvious which ebuild is
failing the KEYWORDS check.  List the file explicitly in the failure.

BUG=chromium:307180
TEST=ran upload w/many files and looked at output

Change-Id: Ie6073e2925d9f3dba11166c94b3c0c4a6a516674
Reviewed-on: https://chromium-review.googlesource.com/219279
Reviewed-by: Gaurav Shah <gauravsh@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
1 file changed